In the 1911 Canada census Herbert was listed as a messenger for the telephone company.
Volume XII Grand Forks Gazette, Saturday, June 21, 1913, Number 48, Page 05, City & District. Herbert Barnum has accepted a position in Nelson, B.C. and left for that city on Tuesday.
World War I Draft Registration Cards, 1917-1918 about Herbert L. Barnum. Name: Herbert L. Barnum; City: Los Angeles; County: Los Angeles; State: California; Birthplace: Oakland, California of America; Birth Date: 27 Sep 1893; Race: African Descent (Black); Roll: 1530906; DraftBoard: 8; Age: 23; Occupation: Porter, Vandegrift Shoe Co.; Nearest Relative: Grandfather; Height/Build: Medium/Medium; Color of Eyes/Hair: Black/Black.